Festoon lamp socket with fastener lug



FIG. 1 is a front left top perspective view of a festoon lamp socket with fastener lug showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a back view thereof; and,

FIG. 4 is a bottom view thereof. 

The ornamental design for festoon lamp socket with fastener lug, as shown and described. 